diff --git a/.gitattributes b/.gitattributes
index baafd26..0b373bf 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,3 +1,3 @@
-pdfjs/* linguist-vendored
+pdfjs/** linguist-vendored
 *.js linguist-vendored
 *.flt linguist-vendored
\ No newline at end of file